Add init_view() method in Widget trait

Author: antoyo

Cargo.toml

@@ -6,7 +6,7 @@ documentation = "https://docs.rs/relm/"
 license = "MIT"
 name = "relm"
 repository = "https://github.com/antoyo/relm"
-version = "0.6.0"
+version = "0.6.1"
 
 [dependencies]
 cairo-rs = "^0.1.2"

examples/simple.rs

@@ -51,6 +51,10 @@ impl Widget for Label {
         }
     }
 
+    fn init_view(&self) {
+        self.label.set_text("Test");
+    }
+
     fn update(&mut self, _event: LabelMsg, _model: &mut LabelModel) {
         self.label.set_text("");
     }

relm-gen-widget/Cargo.toml

@@ -5,7 +5,7 @@ documentation = "https://docs.rs/relm-gen-widget/"
 license = "MIT"
 name = "relm-gen-widget"
 repository = "https://github.com/antoyo/relm"
-version = "0.6.2"
+version = "0.6.3"
 
 [dependencies]
 lazy_static = "^0.2.4"

relm-gen-widget/src/lib.rs

@@ -108,7 +108,7 @@ pub fn gen_widget(input: Tokens) -> Tokens {
                             state.widget_model_type = Some(get_return_type(sig));
                             new_items.push(i);
                         },
-                        "subscriptions" | "update_command" => new_items.push(i),
+                        "init_view" | "subscriptions" | "update_command" => new_items.push(i),
                         "update" => {
                             state.widget_msg_type = Some(get_second_param_type(&sig));
                             state.update_method = Some(i)

src/lib.rs

@@ -391,6 +391,7 @@ fn create_widget_test<WIDGET>(remote: &Remote) -> Component<WIDGET>
         let model = WIDGET::model();
         (WIDGET::view(relm, &model), model)
     };
+    widget.init_view();
 
     let model = Arc::new(Mutex::new(model));
 
@@ -430,6 +431,7 @@ fn create_widget<WIDGET>(remote: &Remote) -> Component<WIDGET>
         let model = WIDGET::model();
         (WIDGET::view(relm, &model), model)
     };
+    widget.init_view();
 
     let model = Arc::new(Mutex::new(model));
 

src/widget.rs

@@ -39,6 +39,12 @@ pub trait Widget
     /// Get the containing widget, i.e. the parent widget of the view.
     fn container(&self) -> &Self::Container;
 
+    /// Update the view after it is initially created.
+    /// This method is only useful when using the `#[widget]` attribute, because when not using it,
+    /// you can use the [`view()`](trait.Widget.html#tymethod.view) method instead.
+    fn init_view(&self) {
+    }
+
     /// Create the initial model.
     fn model() -> Self::Model;